Set in the immediate aftermath of the zombie apocalypse, Left 4 Dead's survival co-op mode lets up to four players blast a path through the swarming zombie hordes and terrifying mutant monsters. Guide your survivors across the rooftops of an abandoned metropolis, through rural ghost towns and pitch-black forests in your quest to escape a devastated Ground Zero crawling with infected enemies.

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Now I haven't downloaded this yet, but from what I got from the discription, you just posted an official map and a .nav file, for a different game into here, completely forgetting that l4d and tf2 have different textures, models and sprites. And if you assume that people are going to move that stuff by them selves, then why post the map here in the first place. Also, this is illeagle as you are distributing an official map to another game. I think it is, anyway...